== sanity test 127f: OST IO latency histograms by size === 17:57:06 (1789682226)
osd-ldiskfs.lustre-OST0000.read_cache_enable=0
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=0
osd-ldiskfs.lustre-OST0000.io_latency_stats=clear
osd-ldiskfs.lustre-OST0000.stats=clear
osd-ldiskfs.lustre-OST0001.stats=clear
Generating I/O with size 4K
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.161635 s, 253 kB/s
10+0 records in
10+0 records out
40960 bytes (41 kB, 40 KiB) copied, 0.113101 s, 362 kB/s
Generating I/O with size 64K
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.220867 s, 3.0 MB/s
10+0 records in
10+0 records out
655360 bytes (655 kB, 640 KiB) copied, 0.135176 s, 4.8 MB/s
Generating I/O with size 1024K
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.483806 s, 21.7 MB/s
10+0 records in
10+0 records out
10485760 bytes (10 MB, 10 MiB) copied, 0.377725 s, 27.8 MB/s
osd-*.lustre-OST0000.io_latency_stats stats after I/O:
osd-ldiskfs.lustre-OST0000.io_latency_stats=
io_latency_by_size:
snapshot_time:  1789682238.992481371
start_time:     1789682230.901013586
elapsed_time:   8.091467785
rd_4K: { 128us: 2, 256us: 3, 512us: 2, 1024us: 1, 2048us: 2, }
rd_64K: { 256us: 7, 512us: 1, 1024us: 2, }
rd_1024K: { 512us: 5, 1024us: 2, 2048us: 2, 4096us: 1, }
wr_4K: { 256us: 7, 512us: 1, 1024us: 1, 2048us: 1, }
wr_64K: { 256us: 6, 512us: 3, 1024us: 1, }
wr_1024K: { 512us: 4, 1024us: 6, }
osd-ldiskfs.lustre-OST0000.read_cache_enable=1
osd-ldiskfs.lustre-OST0000.writethrough_cache_enable=1